Trimmer or guillotine table



July 23. 1968 G. DESCLEE DE MAREDSOUS 3,393,592

TRIMMER OR GUILLOTINB TABLE Filed June 10, 1966 United States Patent 3,393,592 TRIMMER OR GUILLOTINE TABLE Guy Desclee d'e Maredsous, Wasquehal, Nord, France, assignor to Societe Francaise des Presses FL Filed June 10, 1966, Ser. No. 567,810 Claims priority, application France, June 12, 1965,

1 Claim. a. 83-207) ABSTRACT OF THE DISCLOSURE A trimmer table has a plane surface of undulated sheet metal on which sheets of paper to be trimmed are pushed toward a cutter in a given direction, parallel grooves in the surface extend in the direction of travel of the sheet and there is provided a movable member for pushing the sheets, this member having vertical projections fitting in the grooves for sliding therein, the projections extending towards the sheets.

The invention to an improved trimmer or guillotine table using a movable square of a type particularly adapted to the geometry of the table.

It has been noted that a trimmer or guillotine table in order to operate under the best conditions must fulfill certain requirements such as a planarity of a great accuracy in all the surface thereof which receives material to cut.

A pile of paper sheet, which most often constitutes said material is guided and sent towards the blades of a cutter by means of a transverse movable square, the functional play between it and the table having to be less than the thickness of the thinnest sheet which must be cut.

Such operating conditions require the putting into operation of complex techniques in order to prepare plane surfaces; owing to this fact the resulting machines are prohibitively expensive.

The present invention relates to a new trimmer table as well as a new movable square which by their characteristics, cooperate in order to fulfill the requirements of the thickness of the paper, while not requiring a very critical finishing of a surface of the table, nor a particularly studied control of the play between the transverse square and the table.

The present invention will be readily understood by means of the following description which conforms to the annexed drawing, and which are both given by way of example. In the drawings:

FIGURE 1 shows a cross-sectional view along line II-II of FIGURE 2 of the surface of the table and of the mobile square;

FIGURE 2 shows a view taken from below of the assembly table-movable square;

FIGURE 3 shows a cross-section, taken along III-III of FIGURE 1 of said square;

FIGURES 4a to 40 show in cross-section different embodiments of the plane of the table.

A sliding plane of the Table I is formed by a surface having in the particular embodiment shown on FIGURE 1, grooves 2 the axes of which are mutually parallel and follow the translational movement of the movable square.

The movable square 3 shown on FIGURE 3 has small vertical wings 4 of known design, to the extent that they comprise projections 5 towards the bottom, which penetrate to a considerable extent in the spaces provided by the grooves in the surface of the table.

During its horizontal translational movement in the direction of forward movement of the stack of paper sheets, the projections which have penetrated in the spaces above-described effect a type of raking action on the surface of this table and push in front of them the sheets.

It is thus clearly seen that this device solves satisfactorily the problem of play between table and square, by eliminating the same entirely since the device operates by crossing of a horizontal plane (plane of the table) and the vertical planes of the projections of the square. Under these conditions, the thickness of the sheet of paper makes no difference and in no case can a sheet slide between the square and the table.

The surface of the table thus can be formed by the assembly of two plates of undulated sheets of metal, as shown on FIGURES l and 2.

The surface can also be formed by an assembly of bars which are mutually parallel, and positioned along the plane of the table and parallel to the direction of the movement of the stack of sheets. These bars can be of any cross-section.

It is also possible to use U-shaped irons positioned as shown on FIGURE 4b or the conventional metal sheet of FIGURE 4c. The projections of the square can be secured thereto but the assembly can just as well be obtained integrally by casting. The projections can have a U-shaped profile, as shown in FIGURE 40.

The above description which corresponds to one embodiment preferred of the invention which is not limited to the embodiments mentioned.

In particular a movable square, as well as the surface of the table can have variations as to their shape all of which are encompassed by the present invention.

What is claimed is:

1. In combination in a trimmer table having a plane surface consisting of an undulated sheet of metal on which sheets of paper to be trimmed are pushed toward a cutter in a given direction, parallel grooves in said surface extending in the direction of travel of said sheets and a movable member for pushing said sheets, said member having vertical projections, fitting in said grooves for sliding therein; said projections extending towards said sheets.

References Cited UNITED STATES PATENTS 972,101 10/1910 Dayton 269301 X 1,347,536 7/1920 Downie 21416 3,161,098 12/1964 Thumim 83-207 X WILLIAM S. LAWSON, Primary Examiner. 

